Sometimes there are adaptations to some periods that are pretty accurate. This premise starts in Tokugawa shogunate (Edo Period), the third and last shogunate of Japan before Meiji Restoration (the power from this point relays on the Emperor and not a supreme general and his respectives feudal lords). This setting is pretty interesting, but I think is a bit hard to swallow if you have not had, at least, small previous knowledge of japanese context in this era. With context I mean... Knowing what a hatamoto or a gokenin is (for example, these two were samurais at shogun's service, but the first one was above the second one, because people with this title could have a personal audience with the great general (shogun) while the second one could not), and other therminology that could be a lot of information if someone has not a previous knowledge about this context.
I liked that men had had similar haistyles to people who actually lived in that era. The only thing that made me really unconmfortable was the reverse role of men and women due an epidemy. Maybe I am acting so sensitive to these "Put in women shoes reversing the gender roles"... But for me is not genuine... If men were drastically reduces in numbers, according to the era ideology, it would be easier and more "practical" for them arrange an harem for their own, if they really want to, again, increase men population. Besides... I started to simpatyze with their precary situations as part of a powerful figure's ornaments... But I do not know... At least under my point of view... It is wrong to portray the pain and suffering that belonged to harem's women (mistreats, raping, etc etc) for a long time throgh men characters in women roles...
Maybe for some people it is okay, but at least from my point of view... It does not make sense at all...
Is not a bad anime... But is not for me...